why is toxicity such a big deal?

Mute & report can be done at the same time. If I find you annoying, I'll just mute you to ease my time gaming, while reporting after game just so you would stop being an ass to the rest of your future teammates.

I have a feeling you are one of those that mistake people with bad games as trolls and people with good games as scripters.

There's a mute button for a reason.

That's not how the mute button works, though I kind of suspect you're just venting here and not really interested in a genuine answer.

There are bulletproof vests why is it Not allowed to shoot people.

Why is Gun Controll such a big deal?

There are Bulletproof vests for a reason.

Because some people are unable to enjoy the game when presented with any negativity. Therefore, riot is trying to remove it from the game at the expense some of its player-base.

They punish all 4 so...